Adjustable valve ball drilling tool

Abstract

The utility model belongs to valve machining technical field, concretely relates to an adjustable valve ball drilling frock. The frock includes base, is equipped with the jacking drive spare of the vertical jacking rod on the base and is equipped with the support stand of left and right through horizontal through slot, the sliding positioning beam is slidably assembled in the horizontal through slot, and the sliding positioning beam is arranged at least two groups of the work position unit including the drill guiding hole, the upper spherical cavity and the locking positioning groove along the horizontal arrangement, the support stand top is equipped with the locking part that can insert the locking positioning groove, and the drill guiding hole of corresponding work position is coaxial with the jacking rod after locking, the lower positioning seat with the lower spherical cavity is detachably connected to the jacking rod top, and two cavities cooperate and hold the positioning valve ball. The frock can quickly switch the processing specification, is suitable for the drilling processing of multiple size valve ball, and the change type operation is simple.

Description

Technical Field

[0001] This utility model belongs to the field of valve processing technology, specifically relating to an adjustable valve ball drilling tool. Background Technology

[0002] The valve ball drilling fixture is a special clamping equipment for machining the positioning holes of valve balls and valve stems. It is used to clamp and position the valve ball and guide the drill bit feed, and is widely used in the valve manufacturing industry.

[0003] Existing valve ball drilling fixtures are mostly single-specification customized structures. The positioning components and guide holes of a single fixture can only be used with valve balls of a single size and drill bits of the corresponding diameter. When machining valve balls of different specifications, the positioning components need to be completely removed from the mounting slot for replacement. This changeover operation involves many steps, is time-consuming, and the multiple sets of independent positioning spare parts also increase production management costs. Utility Model Content

[0004] This invention achieves rapid changeover and adaptation for drilling multiple specifications of valve balls by using a sliding positioning beam with multiple workstation units and a through transverse groove, combined with a locking component to switch and lock the workstation and a detachable lower positioning seat at the top of the lifting rod, thereby solving the problems mentioned in the background art.

[0005] The technical solution of this utility model is achieved as follows: an adjustable valve ball drilling fixture, including a base, and further comprising: The lifting drive unit, located on the base, has a vertical lifting rod; The support stand is vertically mounted on the base, and a transverse through slot is provided on the side near the lifting drive component. The sliding positioning beam is slidably assembled in the transverse through groove, with one end extending above the lifting rod. At least two sets of workstation units are arranged laterally on the sliding positioning beam. Each set of workstation units includes a vertically penetrating drilling guide hole, an upper spherical cavity on the bottom surface, and a locking positioning groove on the top surface. At least one locking element is provided on the top of the support stand, which can be inserted into any locking positioning groove to lock the lateral position of the sliding positioning beam. When locked, the drilling guide hole of the corresponding station is coaxial with the lifting rod. The lower positioning seat is detachably connected to the top of the lifting rod, and its top surface has a lower spherical cavity. The upper spherical cavity and the lower spherical cavity cooperate to clamp the positioning valve ball.

[0006] The present invention is further configured such that the lifting drive component is a drive cylinder, and the lifting rod is the piston rod of the drive cylinder.

[0007] The present invention is further configured such that the transverse through groove is a T-shaped groove or a dovetail groove, and the part of the sliding positioning beam that extends into the transverse through groove is provided with a guide fitting part that is slidably adapted to the transverse through groove.

[0008] The present invention is further configured such that the locking component is a locking bolt, the top of the support base is provided with a threaded hole adapted to the locking bolt, the bottom of the locking bolt is provided with a pressing protrusion, and the locking positioning groove is a groove adapted to the pressing protrusion.

[0009] The present invention is further configured such that the bottom of the lower positioning seat is threadedly connected to the top of the lifting rod via an integrally formed external threaded connecting post.

[0010] The present invention is further configured such that the upper spherical cavity and the lower spherical cavity are both inner spherical structures adapted to the outer spherical surface of the valve ball. In the locked state, the axes of the upper spherical cavity, the lower spherical cavity and the drilling guide hole of the corresponding work position coincide.

[0011] The present invention is further configured such that a screwing head is integrally formed on the side wall of the lower positioning seat outward, and the screwing head is used to assist in the screwing and disassembly of the lower positioning seat.

[0012] By adopting the above technical solution, the beneficial effects that this utility model can achieve are: 1. By sliding the sliding positioning beam with multiple workstation units and sliding the transverse through groove, combined with the locking parts to switch and lock the workstation and the detachable lower positioning seat to adapt to the corresponding specifications, the processing and changing of different valve balls can be completed quickly, which improves the processing efficiency of valve ball drilling.

[0013] 2. By embedding the locking element into the locking positioning groove and correspondingly arranging it with the work station unit, the coaxiality of the drilling guide hole and the lifting rod after the work station is switched is ensured. In conjunction with the upper and lower spherical concave cavities for centering and clamping the valve ball, the machining accuracy of the valve ball drilling is improved.

[0014] 3. The structure integrates multiple processing stations with a replaceable lower positioning seat through a single sliding positioning beam, which is compatible with multiple specifications of valve balls without the need for multiple complete tooling sets, reducing the investment and management costs of tooling parts and improving the economic efficiency of tooling use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the working position of the first workstation unit of this utility model; Figure 4 This is a schematic diagram of the second workstation unit of this utility model; Figure 5 This is a utility model Figure 3 A magnified structural diagram of part A.

[0016] The attached figures are labeled as follows: 1. Base; 2. Lifting drive component; 3. Vertical lifting rod; 4. Support stand; 5. Horizontal through slot; 6. Sliding positioning beam; 70. Drilled guide hole; 71. Upper spherical cavity; 72. Locking positioning groove; 8. Locking component; 9. Lower positioning seat; 10. Lower spherical cavity; 11. Valve ball; 12. Guide mating part; 13. Threaded hole; 14. Pressing protrusion; 15. External threaded connecting post; 16. Tightening head. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-5 : Example: This embodiment provides an adjustable valve ball drilling fixture, including a base 1, and further comprising: The lifting drive component 2 is mounted on the base 1 and has a vertical lifting rod 3; The support stand 4 is vertically mounted on the base 1, and a transverse through groove 5 is provided on the side near the lifting drive component 2. The sliding positioning beam 6 is slidably assembled in the transverse through groove 5, with one end extending above the lifting rod; At least two sets of workstation units are arranged horizontally on the sliding positioning beam 6. Each set of workstation units includes a vertically penetrating drilling guide hole 70, an upper spherical cavity 71 on the bottom surface, and a locking positioning groove 72 on the top surface. At least one locking element 8 is provided on the top of the support base 4, which can be inserted into any locking positioning groove 72 to lock the lateral position of the sliding positioning beam 6. When locked, the drilling guide hole 70 of the corresponding station is coaxial with the lifting rod. The lower positioning seat 9 is detachably connected to the top of the lifting rod, and its top surface has a lower spherical cavity 10. The upper spherical cavity 71 and the lower spherical cavity 10 cooperate to clamp the positioning valve ball 11.

[0018] This embodiment provides an adjustable valve ball drilling fixture for drilling the valve ball 11 valve stem positioning hole. The whole assembly is composed of a base 1, a lifting drive component 2, a support stand 4, a sliding positioning beam 6, a locking component 8 and a lower positioning seat 9. After the components are assembled in the preset position, they cooperate with each other to complete the clamping, positioning and drilling of valve balls 11 of different specifications.

[0019] The base 1 serves as the load-bearing base of the tooling and provides installation support for all other components. It is a solid plate-shaped structure and is horizontally arranged at the bottom of the tooling. The lifting drive component 2 and the support stand 4 are both fixedly installed on the corresponding installation positions on the top surface of the base 1 by fastening bolts.

[0020] The lifting drive 2 is used to output vertical linear reciprocating motion to provide lifting power for clamping and positioning the valve ball 11. It adopts a drive cylinder structure and is in the shape of a vertically arranged cylindrical cylinder body, which is arranged on the top surface of the base 1 near the support stand 4. The bottom of the cylinder body has an annular mounting flange. The fastening bolts are screwed into the corresponding threaded holes 13 on the top surface of the base 1 through the mounting holes on the flange to achieve a fixed connection between the lifting drive 2 and the base 1. The lifting drive 2 is equipped with a piston rod that can move vertically reciprocating. The piston rod constitutes a vertically arranged lifting rod, and the top end of the lifting rod extends toward the protrusion of the sliding positioning beam 6.

[0021] The support stand 4 is used to support the sliding positioning beam 6 and the locking component 8, providing a guiding foundation for the sliding switching of the workstation. It is a vertically extending block structure, which is vertically fixed to the top surface of the base 1 and located on the side of the lifting drive component 2. The side of the support stand 4 near the lifting drive component 2 has a transverse through groove 5 that is completely open in the horizontal direction. The top of the support stand 4 has a threaded hole 13 that extends vertically and goes into the transverse through groove 5 for assembling the locking component 8.

[0022] The transverse through-slot 5 provides sliding guidance and vertical restraint for the sliding positioning beam 6. Its cross-section is T-shaped or dovetail-shaped, and the slot walls are machined to maintain a flat surface. It is completely continuous along the transverse direction of the support base 4, without any end closures. This continuous structure eliminates end interference during the transverse movement of the sliding positioning beam 6, adapts to the arrangement and sliding switching of multiple workstations, and facilitates the removal of metal chips entering the slot from both ends, preventing sliding jamming.

[0023] The sliding positioning beam 6 is used to integrate multiple processing stations and achieves switching between different processing specifications through lateral sliding. It is a long strip-shaped metal structure, which is divided into two parts: an inward part and an outward part. The outer side of the inward part is integrally formed with a guide fitting part 12 that is adapted to the cross-sectional shape of the transverse through groove 5. The guide fitting part 12 is embedded in the transverse through groove 5 and forms a sliding fit with the groove wall, so that the sliding positioning beam 6 can move horizontally along the extension direction of the transverse through groove 5, while restricting the sliding positioning beam 6 from disengaging from the transverse through groove 5 vertically. The outward part extends from the transverse through groove 5 toward the lifting drive member 2 and is suspended directly above the lifting rod.

[0024] At least two independent workstation units are arranged horizontally along the sliding positioning beam 6. In this embodiment, two workstation units are set, each corresponding to two different valve ball 11 processing specifications. Each workstation unit includes a drilling guide hole 70, an upper spherical cavity 71, and a locking positioning groove 72. The drilling guide hole 70 extends vertically through the protrusion of the sliding positioning beam 6, with smooth hole walls, and is used to guide the drill bit to feed vertically. The upper spherical cavity 71 is opened on the bottom surface of the protrusion of the sliding positioning beam 6, corresponding to the periphery of the lower port of the drilling guide hole 70. It is an inwardly recessed inner spherical structure, used to fit with the upper surface of the valve ball 11 to achieve upper positioning. The locking positioning groove 72 is opened on the top surface of the protrusion of the sliding positioning beam 6. It is an inwardly recessed groove structure. Each set of locking positioning grooves 72 and each set of drilling guide holes 70 have a one-to-one positional relationship, and the center distance between them remains fixed, used to cooperate with the locking component 8 to achieve workstation locking.

[0025] The locking component 8 is used to lock the lateral position of the sliding positioning beam 6 to prevent the sliding positioning beam 6 from moving laterally during processing. It adopts a locking bolt structure, and the outer surface of the bolt shank is machined with external threads to form a threaded engagement with the threaded hole 13 at the top of the support base 4. The bottom of the locking bolt is integrally formed with a cylindrical pressing protrusion 14. The outer diameter of the pressing protrusion 14 is adapted to the inner diameter of the locking positioning groove 72. When the locking bolt is tightened, the pressing protrusion 14 can be embedded into the corresponding locking positioning groove 72 to achieve lateral positioning and vertical pressing of the sliding positioning beam 6.

[0026] The lower positioning seat 9 is used to support the lower surface of the valve ball 11 and cooperates with the upper spherical cavity 71 to clamp and position the valve ball 11. It can also be adapted to valve balls 11 of different specifications by replacement. The lower positioning seat 9 is a rotating structure with an inwardly recessed lower spherical cavity 10 on its top surface. The lower spherical cavity 10 is an inner spherical structure that is adapted to the outer spherical surface of the valve ball 11. The bottom of the lower positioning seat 9 is integrally formed with an external threaded connecting post 15. The axis of the external threaded connecting post 15 coincides with the axis of the lower spherical cavity 10. The center of the top surface of the lifting rod is provided with an internal threaded blind hole adapted to the external threaded connecting post 15. The lower positioning seat 9 is screwed into the internal threaded blind hole through the external threaded connecting post 15 to achieve a detachable connection with the top of the lifting rod.

[0027] The lower positioning seat 9 has an integrally extended screw head 16 on its side wall. The screw head 16 is a block-shaped structure protruding from the side wall of the lower positioning seat 9, which is used to provide a force application point for the operator and assist in the screwing installation and disassembly replacement of the lower positioning seat 9.

[0028] When switching specifications, first loosen the locking bolt to disengage the clamping protrusion 14 from the locking positioning groove 72 of the current station, releasing the lock on the sliding positioning beam 6; push the sliding positioning beam 6 along the extension direction of the transverse through groove 5, and insert the drill bit of the corresponding processing specification into the drilling guide hole 70 of the target station to complete the auxiliary positioning; at this time, the clamping protrusion 14 below the locking bolt is aligned vertically with the locking positioning groove 72 of the corresponding station, tighten the locking bolt downwards, and confirm the positioning by the tactile feedback of the clamping protrusion 14 falling into the locking positioning groove 72, so that the clamping protrusion 14 is embedded in the locking positioning groove 72, completing the switching and locking of the upper station; then hold the screw head 16 and rotate the lower positioning seat 9 to unscrew the lower positioning seat 9 of the current specification from the top of the lifting rod, replace it with the lower positioning seat 9 that matches the specification of the target station and tighten it, completing the adaptation of the lower positioning structure.

[0029] During drilling, the lifting drive 2 is activated to raise the lifting rod to the clamping position, placing the valve ball 11 to be processed into the lower spherical cavity 10 of the lower positioning seat 9, so that the lower surface of the valve ball 11 is in contact with the inner wall of the cavity. The lifting drive 2 continues to raise the lifting rod until the upper surface of the valve ball 11 is tightly in contact with the inner wall of the upper spherical cavity 71 of the corresponding position of the sliding positioning beam 6, and the valve ball 11 is clamped and positioned. At this time, the axes of the drilling guide hole 70, the upper spherical cavity 71 and the lower spherical cavity 10 of this position are coincident. The drill bit is inserted from above the drilling guide hole 70 and fed downward along the hole wall to process the valve stem positioning hole on the valve ball 11. After processing, the lifting drive 2 lowers the lifting rod, and the valve ball 11 moves down and separates from the upper spherical cavity 71, so that the processed valve ball 11 can be removed.

[0030] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. An adjustable valve ball drilling fixture, comprising a base (1), characterized in that, Also includes: The lifting drive unit (2) is located on the base (1) and has a vertical lifting rod (3). The support stand (4) is vertically mounted on the base (1), and a transverse through groove (5) is provided on the side near the lifting drive component (2). The sliding positioning beam (6) is slidably assembled in the transverse through groove (5), with one end extending above the lifting rod; At least two sets of workstation units are arranged in the transverse direction on the sliding positioning beam (6). Each set of workstation units includes a vertically penetrating drilling guide hole (70), an upper spherical cavity (71) on the bottom surface, and a locking positioning groove (72) on the top surface. At least one locking element (8) is provided on the top of the support stand (4) and can be inserted into any locking positioning groove (72) to lock the lateral position of the sliding positioning beam (6). When locked, the drilling guide hole (70) of the corresponding station is coaxial with the lifting rod. The lower positioning seat (9) is detachably connected to the top of the lifting rod. Its top surface has a lower spherical cavity (10). The upper spherical cavity (71) and the lower spherical cavity (10) cooperate to clamp the positioning valve ball (11).

2. The adjustable valve ball drilling fixture according to claim 1, characterized in that, The lifting drive component (2) is a drive cylinder, and the lifting rod is the piston rod of the drive cylinder.

3. The adjustable valve ball drilling fixture according to claim 1, characterized in that, The transverse through groove (5) is a T-shaped groove or a dovetail groove, and the part of the sliding positioning beam (6) that extends into the transverse through groove (5) is provided with a guide fitting part (12) that is slidably adapted to the transverse through groove (5).

4. The adjustable valve ball drilling fixture according to claim 1, characterized in that, The locking component (8) is a locking bolt. The top of the support base (4) is provided with a threaded hole (13) that is compatible with the locking bolt. The bottom of the locking bolt is provided with a pressing protrusion (14). The locking positioning groove (72) is a groove that is compatible with the pressing protrusion (14).

5. The adjustable valve ball drilling fixture according to claim 1, characterized in that, The bottom of the lower positioning seat (9) is threadedly connected to the top of the lifting rod via an integrally formed external threaded connecting post (15).

6. The adjustable valve ball drilling fixture according to claim 1, characterized in that, The upper spherical cavity (71) and the lower spherical cavity (10) are both inner spherical structures adapted to the outer spherical surface of the valve ball (11). In the locked state, the axes of the upper spherical cavity (71), the lower spherical cavity (10) and the drilling guide hole (70) of the corresponding work position coincide.

7. The adjustable valve ball drilling fixture according to claim 5, characterized in that, The side wall of the lower positioning seat (9) is integrally formed with a screw head (16), which is used to assist in the screwing and disassembling of the lower positioning seat (9).

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